690190213 has 2 divisors, whose sum is σ = 690190214. Its totient is φ = 690190212.

The previous prime is 690190177. The next prime is 690190223. The reversal of 690190213 is 312091096.

690190213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652955809 + 37234404 = 25553^2 + 6102^2 .

It is a cyclic number.

It is not a de Polignac number, because 690190213 - 2⁹ = 690189701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690190223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345095106 + 345095107.

It is an arithmetic number, because the mean of its divisors is an integer number (345095107).

Almost surely, 2^690190213 is an apocalyptic number.

It is an amenable number.

690190213 is a deficient number, since it is larger than the sum of its proper divisors (1).

690190213 is an equidigital number, since it uses as much as digits as its factorization.

690190213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 690190213 is about 26271.4714662122. The cubic root of 690190213 is about 883.7367841913.

The spelling of 690190213 in words is "six hundred ninety million, one hundred ninety thousand, two hundred thirteen".